Piston ring



Nov. 17, 192 5.

1,562,033 5. A. LUKASZEWICZ I I PISTON RING Filed Aug. 1 1922 524 29 4?. zuxdsizrw z Patented Nov; 1 381925.

1,562,033" UNITED ,STATES PATENT OFFICE,-

' STANLEY A. LUKASZEWICZ, or some: MILWAUKEE, WISCONSIN, nssrenon or ONE- HALF ,TO s'rnvnn s. nuxasznwxcz or MILWAUKEE, 'WISCONSIN. j

PISTON RING.

Application filed August 18, 1922. Serial No. 582,628. Y

To all whom it may concern:

Be it known that I, STANLEY A. LUKA- sznwIoz,-a citizen of the United States, and

resident of South Milwaukee, in the county I 5 'of Milwaukee and Stateof 'Wisconsin, have invented certain new and useful Improvements in Piston-Rings; and I do hereby declare that the following is.a full, clear, and exact description thereof.

This invention relates. to a piston ring.

It is an object of this invention to provide a piston ring with positive acting means for insuring that contact will be maintained between the ring and the cylinder Y .15 within which it moves. t

v Another object of the invention is to pro 'vide a ring which will-at all times be in constant contact with the side wall of the piston ring grooveg It is'still anotherfobjectof my inventlon to provide a piston ring having a wearing surface of .sultable' rmetal and slight resiliency and means possessing greater resiliency mounted within the piston ring adapted to .produce an outward pressure upon the wearin rin s or ring.

It is still anot er 0 ject of my invention' to provide a simple and cheaply manufactured ring of t which it has not only an opening extending entirely through the; ring and 'expansible circumferentially, butwhich is also expansi; ble in the direction of the longitudinal axis at,15 and 15'.- Within this groove is ar 0f the piston, thus maintaining a tight nates knocking of thejring in the piston groove and also revents leakage around the base of the ring or rings within the groove.

e characterdescribed in joint in the piston ringgroove which elimi- Other objects will be apparent as the de'-- scription proceeds and my invention is'gil-vjf clini' ng upwardly ,from a point adjacent the base of the 'groove 2.v

The groove 2 has arranged therein suitable packing rings and in that shown in the drawings I have provided an outer splitwearing ri'n 5 which has an inclined face 6 coactingw1th the side wall 4 of the groove 2. r The ring 5 is provided with a second in- 1 clined face 7, the angle of which is greater than that of the face 6, and coacting with this latter face is a second split ring 8 the other face of which bears againstthe perpendicular. wall 3 of'the groove 2.-

It will be noted hat in the structur herein above referred to that when the ring 8 expands outwardly the coaction of the inclined-faces between the two rings .will cause the wearing ringv to be forced up the inclined wall 4, thus always insuring'a tight joint between, the, wearing ring and the iston groove wall. The wearing ring 5 is urther forced contact with the walls'of the cylinder 'thus preventing any leakage of oil or gas between the piston to the wall; Furthermore, by the structure referred to the passage of gas or oilthrough the piston groove is entirely eliminated.

- Referring to'that structure disclosed in ranged two rings 16 and'l7 each of which are similar to the ring 5 referred to inthe preferred form. Thes'erings 16 and 17 have placed between them the split ex ansion ring 18 formed with... inclined aces which are adaptedto engage, corresponding ,facesformed on therings '15 and 15'.

Bi. this structure-it-will be noted that as t e ring 18 tend'sijto' expand the rings 16 and 17 are forced outwardly against the c linder wall and upward of the incline wall 15 and 15', thus insuring a tight joint between the ring and the cylinder wall and piston.

Furthermore, it will be apparent for'the structure, herein referred to that in order to insure a proper fit of the rings with the groove, the ring or rings having the inf clined wall may be ground in place.

,It is well understood that while the invention has been described and' illustrated in very specific terms in detail construction and arrangement, various changes in the several parts of the same, or the manner of their assemblage and application may be resorted to without departing from the spirit and scope of my invention;

Further attention is directed to the fact that the foregoing structure tends to firmlyhold, both the top and bottom of the piston, within the cylinder, thereby eliminating all tendenc of the piston to slap against the wall the cylinder. a

Having thus fully described my invention what I claim as'new is:. a

A piston having therein an annular groove adapted to receive therein packing,

both side walls of said groove being partly inclined outwardly with respect to each other and the remaining portion of each Wallbeing perpendicular to the base of the groove, a pair of split contractible rings positioned within sald groove and coacting with the inclined portions of the side walls and provided with adjacent'inclined faces which are of a greater angle than the first said inclined faces, and a split expansion ring arranged within the base portion of the grooveand having its outer face provided with converging inclined faces adapted to coact with the adjacent faces of the contractible rings'for forcing said rings upwardly of said inclined walls and outwardly in contact with the cylinder wall.

In testimony that I claim the foregoing I have hereunto set my hand at Milwaukee, in the county of Milwaukee and State of lVisconsin.

STANLEY A. LUKASZEWIGZ. 

